17
15
111000000000111
011100000001110
011100000001110
011100000001110
001110000011100
001110000011100
001110000011100
000111000111000
000111000111000
000111000111000
000011101110000
000011101110000
000011101110000
000001111100000
000001111100000
000001111100000
000000111000000
